An automatic welding device and method based on roller processing

Abstract

The application discloses an automatic welding device and method based on roller processing and relates to the technical field of roller welding processing. The device comprises a base, the top of the base is provided with a segmented support, and one end of a rotating ring is provided with a synchronous turnover part. When the inner link ring moves towards the rotating ring, the straight rack at the bottom of the second connecting plate moves downwards, and in this process, the piston rod moves relative to the piston cylinder, so that the supporting plate and the lowest first connecting plate are always in a flush state. The first bidirectional screw rod is rotated to drive the connecting block to move the push position frame, so that the distance between adjacent second connecting frames can be adjusted, the distance between the first connecting frame and the second connecting frame and adjacent second connecting frames is always equal, the roller can be segmented supported according to the length of the roller, the bending of the two ends of the roller under the action of its own gravity is prevented, and the accuracy of the butt joint of the roller and the connecting shaft is ensured.

Description

Technical Field

[0001] This invention relates to the field of roller welding processing technology, specifically an automatic welding device and method based on roller processing. Background Technology

[0002] Plasma arc welding is a fusion welding method that uses a high-energy-density plasma arc beam as the welding heat source. The gas is heated by the electric arc and dissociates, then compressed as it passes through a water-cooled nozzle at high speed, increasing its energy density and degree of dissociation to form a plasma arc. Plasma arc welding is a core process in roller manufacturing to achieve precise coaxial welding between the connecting shaft and the roller. Leveraging the high energy density and high penetration of the plasma arc, it completes the circumferential welding of the roller and its connecting shaft, featuring small welding deformation, excellent weld formation, and high joint strength.

[0003] Before welding, the roller and connecting shaft need to be coaxially clamped using a double-end centering fixture. Then, the end face of the connecting shaft is brought into contact with the end face of the roller by the movement of a three-jaw chuck. However, due to the long length of the roller, only the middle part of the roller is supported during the support and positioning process. This causes the two ends of the roller to deflect and sag under their own weight, which leads to misalignment of the roller axis and the connecting shaft axis. This will affect the accuracy of the connection when the roller and the connecting shaft are joined. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic welding device and method based on roller processing in order to solve the problem that slender rollers are prone to deflection and sagging, which affects the welding effect between the rollers and the connecting shaft.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic welding device based on roller processing, comprising a base, connecting seats installed on both sides of the base, a three-jaw chuck provided on the top of the connecting seats, a support frame provided on one side of the three-jaw chuck, a movable seat installed on the top of the support frame, a welding gun connected to the bottom of the movable seat, a segmented support member provided on the top of the base, a positioning ring connected to the top of the base through the segmented support member, a rotating ring rotatably connected to the inner side of the positioning ring through a bearing, and a synchronous flipping member installed at one end of the rotating ring; The synchronous flipping component includes a second gear ring installed on the outer wall of the rotating ring and located on one side of the positioning ring. One end of the rotating ring is fixedly connected to a limit rod, and one end of the rotating ring is provided with a second bidirectional screw located below the limit rod. An inner connecting ring that is slidably connected to the limit rod is sleeved on the outer side of the second bidirectional screw. A first inclined support frame is rotatably connected to the inner side of the inner connecting ring through a rotating shaft. One end of the first inclined support frame is rotatably connected to a first connecting plate located inside the rotating ring through a rotating shaft.

[0006] As a further aspect of the present invention: the number of the first diagonal bracing frames is set to multiple, and the multiple first diagonal bracing frames are distributed at equal distances along the center of the inner ring, and the center of the positioning ring is coaxial with the center of the inner ring.

[0007] As a further embodiment of the present invention: the synchronous flipping component includes a rotating insert rod installed on one side of the support frame, the two ends of the rotating insert rod being rotatably connected to the support frame via bearings, a second driven gear meshing with a second gear ring being fixedly connected to the rotating insert rod, and a first driven gear located on both sides of the second driven gear being sleeved on the rotating insert rod, a double-ring connecting frame located on the outer side of one end of the three-jaw chuck being provided at one end of the first driven gear, and a first gear ring connected to the three-jaw chuck and meshing with the first driven gear being provided on one side of the double-ring connecting frame.

[0008] As a further embodiment of the present invention: the diameters of the second gear ring and the first gear ring, and the diameters of the second driven gear and the first driven gear are equal.

[0009] As a further embodiment of the present invention: the first driven gear and the first gear ring are rotatably connected to the double ring connecting frame through bearings, and the inner side of the first driven gear is provided with a through hole that matches the rotating insert rod.

[0010] As a further embodiment of the present invention: the segmented support includes a limiting slide rail mounted on the top of the base. A first bidirectional lead screw is provided on one side of the limiting slide rail, extending to the other side of the limiting slide rail. A connecting block is movably sleeved on the first bidirectional lead screw. A pusher frame is mounted on the top of the connecting block. A C-shaped slider is slidably connected to the inner side of the pusher frame. One end of the C-shaped slider is rotatably connected to a hinge frame located above the limiting slide rail via a rotating shaft. Multiple limiting guide blocks are slidably connected to the inner side of the limiting slide rail. The top of the limiting guide blocks is connected to the hinge point of the hinge frame. A first connecting frame located above the hinge frame is provided on the top of the limiting guide block located at the center of the hinge frame. A positioning ring is installed on the top of the first connecting frame. An outer connecting ring is rotatably connected to the outer side of the inner connecting ring via a bearing. A second diagonal brace is rotatably connected to the bottom of the outer connecting ring via a rotating shaft. One end of the second diagonal brace... A second connecting plate is slidably connected to a first connecting frame. A straight rack located inside the first connecting frame is provided at the bottom of the second connecting plate. A first transmission gear meshing with the straight rack is rotatably connected to the inner side of the first connecting frame via a rotating shaft. A second connecting frame located on both sides of the first connecting frame is provided at the top of the limiting guide block. A piston cylinder is installed on the outer side of the second connecting frame. A solenoid valve is provided at the bottom of the piston cylinder. A piston rod extending above the piston cylinder is inserted inside the piston cylinder. A movable rack slidably connected to the second connecting frame is provided at the top of the piston rod. A lifting frame is installed at the top of the movable rack. A support plate is installed at the top of the lifting frame. A second transmission gear meshing with the movable rack is rotatably connected to the inner side of the second connecting frame via a rotating shaft. A hexagonal connecting rod penetrating the second transmission gear and the first transmission gear is provided at one end of the second transmission gear.

[0011] As a further embodiment of the present invention: the top of the tray is at the same horizontal height as the top of the first connecting plate at the lowest point inside the swivel ring.

[0012] As a further embodiment of the present invention: there are two of each of the first transmission gear and the second transmission gear, and the spur rack is located between the two first transmission gears, while the movable rack is located outside the two second transmission gears.

[0013] As a further embodiment of the present invention: the lengths of the first diagonal brace and the second diagonal brace are equal.

[0014] This invention also discloses an automatic welding method based on roller processing, employing the aforementioned automatic welding device based on roller processing, comprising the following steps: S1: First, pass the roller to be processed through the rotating ring so that the center section of the roller is located inside the positioning ring; S2: Rotate the second bidirectional lead screw to move the inner ring along the second bidirectional lead screw toward the rotating ring, thereby squeezing one end of the first inclined support frame, causing the other end of the first inclined support frame to push the first connecting plate toward the center of the rotating ring, so that the first connecting plate can clamp and fix the roller. S3: The roller is supported in sections by segmented support components, the connecting shaft is fixed by a three-jaw chuck, and then the horizontal movement of the three-jaw chuck is used to make one end of the connecting shaft fit against one end of the roller. S4: The welding and fixing of the connecting shaft and the roller are achieved by the cooperation of the movable seat and the welding gun. After the welding of one of the connecting shafts is completed, the welding gun is moved by the movable seat to change the position of the welding gun, so that the welding gun can weld and fix the connecting shaft located at the other end of the roller.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting segmented support components, when the inner ring moves towards the rotating ring, the straight rack at the bottom of the second connecting plate moves downward, thereby causing the movable rack to move upward relative to the second connecting frame. During this process, the piston rod moves relative to the piston cylinder, thereby ensuring that the support plate is always flush with the lowest point of the first connecting plate. This supports the roller. The first bidirectional screw can also be rotated to move the connecting block and the push frame, thereby adjusting the distance between adjacent second connecting frames. This ensures that the distance between the first connecting frame and the second connecting frame, as well as between adjacent second connecting frames, is always equal. This allows for segmented support of the roller according to its length, preventing the roller ends from bending under their own weight, ensuring the accuracy of the roller's connection with the connecting shaft, and making the center of the roller coaxial with the center of the connecting shaft. 2. By setting up a piston rod, piston cylinder, and solenoid valve, when the piston rod moves relative to the piston cylinder, outside air enters the piston cylinder or air inside the piston cylinder is discharged from the piston cylinder. By closing the solenoid valve, the air inside the piston cylinder loses its flow space, thereby preventing the piston rod from moving relative to the piston cylinder, which further improves the stability of the roller placement. 3. By setting a synchronous flipping component, when the three-jaw chuck drives the connecting shaft to rotate, the first gear ring will drive the rotating rod to rotate through the first driven gear. At this time, the rotating rod will drive the second gear ring to rotate through the second driven gear, thereby causing the rotating ring to rotate relative to the positioning ring. This causes the roller, which is clamped and limited by the first connecting plate, to rotate synchronously with the rotating ring. With the synchronous rotation of the roller and the connecting shaft, the welding gun performs circumferential welding on the connection between the roller and the connecting shaft, further improving the stability of the welding between the roller and the connecting shaft. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram showing the connection between the first driven gear and the double-ring connecting frame of the present invention; Figure 4 This is a schematic diagram showing the connection between the limiting slide rail and the hinge frame of the present invention; Figure 5 This is a schematic diagram showing the connection between the positioning ring and the inner ring of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle; Figure 7 This is a schematic diagram showing the connection between the second connecting frame and the lifting frame of the present invention; Figure 8 This is a schematic diagram showing the connection between the movable rack and the piston cylinder of the present invention; Figure 9 This is a schematic diagram showing the connection between the pusher frame and the hinge frame of the present invention.

[0017] In the diagram: 1. Base; 2. Connecting seat; 3. Three-jaw chuck; 4. Support frame; 5. Movable seat; 6. Welding gun; 7. First gear ring; 8. Rotating insert rod; 9. First driven gear; 10. Double ring connecting frame; 11. Second driven gear; 12. Limiting slide rail; 13. First bidirectional lead screw; 14. Connecting block; 15. First connecting frame; 16. Push frame; 17. C-shaped slider; 18. Hinge frame; 19. Second connecting frame; 20. Positioning ring; 21. Rotating ring ; 22. Second gear ring; 23. Limiting rod; 24. Inner connecting ring; 25. Outer connecting ring; 26. First diagonal brace; 27. First connecting plate; 28. Second double-acting screw; 29. ​​Second diagonal brace; 30. Second connecting plate; 31. Hexagonal connecting rod; 32. Straight rack; 33. First transmission gear; 34. Support plate; 35. Second transmission gear; 36. Movable rack; 37. Piston cylinder; 38. Piston rod; 39. Solenoid valve; 40. Lifting frame; 41. Limiting guide block. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0020] Please see Figures 1-9 In this embodiment of the invention, an automatic welding device based on roller processing includes a base 1, connecting seats 2 installed on both sides of the base 1, a three-jaw chuck 3 provided on the top of the connecting seats 2, a support frame 4 provided on one side of the three-jaw chuck 3, a movable seat 5 installed on the top of the support frame 4, a welding gun 6 connected to the bottom of the movable seat 5, a segmented support member provided on the top of the base 1, a positioning ring 20 connected to the top of the base 1 through the segmented support member, a rotating ring 21 rotatably connected to the inner side of the positioning ring 20 through a bearing, and a synchronous flipping member installed at one end of the rotating ring 21. The synchronous flipping component includes a second gear ring 22 installed on the outer wall of the rotating ring 21 and located on one side of the positioning ring 20. One end of the rotating ring 21 is fixedly connected to a limit rod 23. One end of the rotating ring 21 is provided with a second bidirectional screw 28 located below the limit rod 23. An inner connecting ring 24 that is slidably connected to the limit rod 23 is sleeved on the outer side of the second bidirectional screw 28. A first inclined support frame 26 is rotatably connected to the inner side of the inner connecting ring 24 through a rotating shaft. One end of the first inclined support frame 26 is rotatably connected to a first connecting plate 27 located inside the rotating ring 21 through a rotating shaft.

[0021] In this embodiment: First, the roller to be processed is passed through the rotating ring 21, so that the center section of the roller is located inside the positioning ring 20. Then, by rotating the second bidirectional lead screw 28, the inner connecting ring 24 moves along the second bidirectional lead screw 28 toward the rotating ring 21, thereby squeezing one end of the first inclined support frame 26, so that the other end of the first inclined support frame 26 pushes the first connecting plate 27 toward the center of the rotating ring 21. In this way, the first connecting plate 27 clamps and fixes the roller. During this process, the roller is supported in sections by the segmented support members, and the connecting shaft is fixed by the three-jaw chuck 3. Then, the horizontal movement of the three-jaw chuck 3 makes one end of the connecting shaft fit with one end of the roller. Then, the connecting shaft and the roller are welded and fixed by the cooperation of the movable seat 5 and the welding gun 6. After one of the connecting shafts is welded, the welding gun 6 is moved by the movable seat 5 to realize the repositioning of the welding gun 6, so that the welding gun 6 welds and fixes the connecting shaft located at the other end of the roller.

[0022] The first diagonal brace 26 is provided in multiple ways, and the multiple first diagonal braces 26 are distributed at equal distances along the center of the inner ring 24, and the center of the positioning ring 20 is coaxial with the center of the inner ring 24.

[0023] Please refer to this carefully. Figure 2 , Figure 3 , Figure 4 , Figure 5 The synchronous flipping component includes a rotating rod 8 installed on one side of the support frame 4. The two ends of the rotating rod 8 are rotatably connected to the support frame 4 through bearings. A second driven gear 11 that meshes with the second gear ring 22 is fixedly connected to the rotating rod 8. A first driven gear 9 located on both sides of the second driven gear 11 is sleeved on the rotating rod 8. A double ring connecting frame 10 located on the outer side of one end of the three-jaw chuck 3 is provided at one end of the first driven gear 9. A first gear ring 7 connected to the three-jaw chuck 3 and meshing with the first driven gear 9 is provided on one side of the double ring connecting frame 10.

[0024] Among them, the diameter of the second gear ring 22 is the same as that of the first gear ring 7, and the diameter of the second driven gear 11 is the same as that of the first driven gear 9. The first driven gear 9 and the first gear ring 7 are rotatably connected to the double ring connecting frame 10 through bearings. The inner side of the first driven gear 9 is provided with a through hole that matches the rotating insert rod 8.

[0025] In this embodiment: when the three-jaw chuck 3 drives the connecting shaft to rotate, the first gear ring 7 will drive the rotating insert rod 8 to rotate through the first driven gear 9. At this time, the rotating insert rod 8 will drive the second gear ring 22 to rotate through the second driven gear 11, so that the rotating ring 21 rotates relative to the positioning ring 20. This causes the roller, which is clamped and limited by the first connecting plate 27, to rotate synchronously with the rotating ring 21. With the synchronous rotation of the roller and the connecting shaft, the welding gun 6 performs circumferential welding on the connection between the roller and the connecting shaft, further improving the stability of the welding between the roller and the connecting shaft.

[0026] Please refer to this carefully. Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 The segmented support includes a limiting slide rail 12 mounted on the top of the base 1. A first bidirectional lead screw 13 extends from one side of the limiting slide rail 12 to the other side. A connecting block 14 is movably sleeved on the first bidirectional lead screw 13. A pusher frame 16 is mounted on the top of the connecting block 14. A C-shaped slider 17 is slidably connected to the inner side of the pusher frame 16. One end of the C-shaped slider 17 is rotatably connected to a hinge frame 18 located above the limiting slide rail 12 via a rotating shaft. The inner side of the limiting slide rail 12 slides... Multiple limiting guide blocks 41 are connected, with the top of each limiting guide block 41 connected to the hinge point of the hinge frame 18. A first connecting frame 15 is located on top of the limiting guide block 41 at the center of the hinge frame 18. A positioning ring 20 is installed on the top of the first connecting frame 15. An outer connecting ring 25 is rotatably connected to the outer side of the inner connecting ring 24 via a bearing. A second diagonal brace 29 is rotatably connected to the bottom of the outer connecting ring 25 via a rotating shaft. One end of the second diagonal brace 29 is connected to the first connecting frame 18. 5. A second connecting plate 30 is slidably connected. The bottom of the second connecting plate 30 is provided with a straight rack 32 located inside the first connecting frame 15. The inner side of the first connecting frame 15 is rotatably connected to a first transmission gear 33 that meshes with the straight rack 32 via a rotating shaft. The top of the limiting guide block 41 is provided with a second connecting frame 19 located on both sides of the first connecting frame 15. A piston cylinder 37 is installed on the outer side of the second connecting frame 19. A solenoid valve 39 is provided at the bottom of the piston cylinder 37. A piston rod 38 extending to the top of the piston cylinder 37 is inserted inside the piston cylinder 37. A movable rack 36 slidably connected to the second connecting frame 19 is provided at the top of the movable rack 36. A lifting frame 40 is installed at the top of the movable rack 36. A support plate 34 is installed at the top of the lifting frame 40. The inner side of the second connecting frame 19 is rotatably connected to a second transmission gear 35 that meshes with the movable rack 36 via a rotating shaft. A hexagonal connecting rod 31 penetrating the second transmission gear 35 and the first transmission gear 33 is provided at one end of the second transmission gear 35.

[0027] The top of the support plate 34 is at the same horizontal level as the top of the first connecting plate 27 at the lowest point inside the rotating ring 21. There are two of each of the first transmission gear 33 and the second transmission gear 35. The straight rack 32 is located between the two first transmission gears 33, and the movable rack 36 is located outside the two second transmission gears 35. The lengths of the first inclined support frame 26 and the second inclined support frame 29 are equal.

[0028] In this embodiment: when the inner ring 24 moves toward the rotating ring 21, it squeezes one end of the first inclined support 26. At this time, the second inclined support 29 also squeezes the second connecting plate 30 along with the movement of the inner ring 24, causing the rack 32 at the bottom of the second connecting plate 30 to move downward. This causes the rack 32 to drive the first transmission gear 33 to rotate. At this time, the first transmission gear 33 drives the second transmission gear 35 to rotate through the hexagonal connecting rod 31, thereby causing the movable rack 36 to move upward relative to the second connecting frame 19. During this process, the piston rod 38 moves relative to the piston cylinder 37, and at the same time, the lifting frame 40 drives the support plate 34 to move upward, so that the support plate 34 is always flush with the lowest point of the first connecting plate 27. This can support the roller and also allow rotation. The first bidirectional lead screw 13 causes the connecting block 14 to move the push frame 16, which in turn pushes the C-shaped slider 17 to press against both sides of the hinge frame 18. This allows adjustment of the distance between adjacent second connecting frames 19, ensuring that the distance between the first connecting frame 15 and the second connecting frame 19, as well as between adjacent second connecting frames 19, remains equal. This allows for segmented support of the roller based on its length, preventing the roller ends from bending under their own weight and ensuring the accuracy of the roller's alignment with the connecting shaft. This ensures that the center of the roller is coaxial with the center of the connecting shaft. After closing the solenoid valve 39, the air inside the piston cylinder 37 is deprived of its flow space, preventing the piston rod 38 from moving relative to the piston cylinder 37, further improving the stability of the roller placement.

[0029] The following describes an automatic welding method based on roller processing, in conjunction with the aforementioned automatic welding device based on roller processing. The method specifically includes the following steps: S1: First, pass the roller to be processed through the rotating ring 21 so that the center section of the roller is located inside the positioning ring 20; S2: Rotate the second bidirectional lead screw 28 to move the inner ring 24 along the second bidirectional lead screw 28 toward the rotating ring 21, thereby causing the inner ring 24 to press one end of the first inclined support frame 26, causing the other end of the first inclined support frame 26 to push the first connecting plate 27 toward the center of the rotating ring 21, so that the first connecting plate 27 can clamp and fix the roller. S3: When the inner ring 24 moves toward the rotating ring 21, it will squeeze one end of the first inclined support 26. At this time, the second inclined support 29 will also squeeze the second connecting plate 30 along with the movement of the inner ring 24, causing the straight rack 32 at the bottom of the second connecting plate 30 to move downward, thereby causing the straight rack 32 to drive the first transmission gear 33 to rotate. At this time, the first transmission gear 33 drives the second transmission gear 35 to rotate through the hexagonal connecting rod 31, thereby causing the movable rack 36 to move upward relative to the second connecting frame 19. During this process, the piston rod 38 moves relative to the piston cylinder 37, and at the same time, the lifting frame 40 drives the support plate 34 to move upward, so that the support plate 34 is always flush with the lowest point of the first connecting plate 27, thus supporting the roller. It is also possible to drive the push frame 16 by rotating the first bidirectional lead screw 13. The movement causes the pusher 16 to push the C-shaped slider 17 to press against both sides of the hinge frame 18, thus adjusting the distance between adjacent second connecting frames 19. This ensures that the distance between the first connecting frame 15 and the second connecting frame 19, and between adjacent second connecting frames 19, is always equal. This allows the roller to be supported in sections according to its length, preventing the ends of the roller from bending under its own weight. This ensures the accuracy of the connection between the roller and the connecting shaft, making the center of the roller coaxial with the center of the connecting shaft. Then, by closing the solenoid valve 39, the air inside the piston cylinder 37 loses its flow space, thus preventing the piston rod 38 from moving relative to the piston cylinder 37. This further improves the stability of the roller placement. The connecting shaft is fixed by the three-jaw chuck 3, and then the horizontal movement of the three-jaw chuck 3 makes one end of the connecting shaft fit against one end of the roller. S4: The welding and fixing of the connecting shaft and the roller is achieved through the cooperation of the movable seat 5 and the welding gun 6. After welding one of the connecting shafts is completed, the welding gun 6 is moved by the movable seat 5 to change the position of the welding gun 6, so that the welding gun 6 can weld and fix the connecting shaft located at the other end of the roller.

[0030] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic welding device based on roller processing, comprising a base (1), characterized in that, Connecting seats (2) are installed on both sides of the base (1). A three-jaw chuck (3) is provided on the top of the connecting seat (2). A support frame (4) is provided on one side of the three-jaw chuck (3). A movable seat (5) is installed on the top of the support frame (4). A welding gun (6) is connected to the bottom of the movable seat (5). A segmented support is provided on the top of the base (1). A positioning ring (20) is connected to the top of the base (1) through the segmented support. A rotating ring (21) is rotatably connected to the inner side of the positioning ring (20) through a bearing. A synchronous flipping component is installed at one end of the rotating ring (21). The synchronous flipping component includes a second gear ring (22) installed on the outer wall of the rotating ring (21) and located on one side of the positioning ring (20). One end of the rotating ring (21) is fixedly connected to a limit rod (23). One end of the rotating ring (21) is provided with a second bidirectional screw (28) located below the limit rod (23). The outer side of the second bidirectional screw (28) is sleeved with an inner connecting ring (24) that is slidably connected to the limit rod (23). The inner side of the inner connecting ring (24) is rotatably connected to a first inclined support frame (26) through a rotating shaft. One end of the first inclined support frame (26) is rotatably connected to a first connecting plate (27) located inside the rotating ring (21) through a rotating shaft. The segmented support includes a limiting slide rail (12) installed on the top of the base (1). A first bidirectional lead screw (13) is provided on one side of the limiting slide rail (12) and extends to the other side of the limiting slide rail (12). A connecting block (14) is movably sleeved on the first bidirectional lead screw (13). A push frame (16) is installed on the top of the connecting block (14). A C-shaped slider (17) is slidably connected to the inner side of the push frame (16). One end of the C-shaped slider (17) is rotatably connected to a hinge frame (18) located above the limiting slide rail (12) via a rotating shaft. The inner side of the limiting slide rail (12) slides... Multiple limiting guide blocks (41) are dynamically connected. The top of the limiting guide block (41) is connected to the hinge point of the hinge frame (18). The top of the limiting guide block (41) located at the center of the hinge frame (18) is provided with a first connecting frame (15) located above the hinge frame (18). The positioning ring (20) is installed on the top of the first connecting frame (15). The outer side of the inner connecting ring (24) is rotatably connected to an outer connecting ring (25) through a bearing. The bottom of the outer connecting ring (25) is rotatably connected to a second diagonal brace (29) through a rotating shaft. One end of the second diagonal brace (29) is connected to the first connecting frame (15). A sliding connecting plate (30) is provided at the bottom of the second connecting plate (30) with a straight rack (32) located inside the first connecting frame (15). The inner side of the first connecting frame (15) is rotatably connected to a first transmission gear (33) meshing with the straight rack (32) via a rotating shaft. The top of the limiting guide block (41) is provided with a second connecting frame (19) located on both sides of the first connecting frame (15). A piston cylinder (37) is installed on the outer side of the second connecting frame (19). A solenoid valve (39) is provided at the bottom of the piston cylinder (37). An extension valve is inserted into the inside of the piston cylinder (37). A piston rod (38) extends above the piston cylinder (37). The top end of the piston rod (38) is provided with a movable rack (36) that is slidably connected to the second connecting frame (19). A lifting frame (40) is installed on the top of the movable rack (36). A support plate (34) is installed on the top of the lifting frame (40). The inner side of the second connecting frame (19) is rotatably connected to a second transmission gear (35) that meshes with the movable rack (36) via a rotating shaft. One end of the second transmission gear (35) is provided with a hexagonal connecting rod (31) that passes through the second transmission gear (35) and the first transmission gear (33).

2. The automatic welding device based on roller processing according to claim 1, characterized in that, The number of the first diagonal bracing (26) is set to be multiple, and the multiple first diagonal bracing (26) are distributed at equal distances along the center of the inner ring (24), and the center of the positioning ring (20) is coaxial with the center of the inner ring (24).

3. The automatic welding device based on roller processing according to claim 1, characterized in that, The synchronous flipping component includes a rotating insert (8) installed on one side of the support frame (4). The two ends of the rotating insert (8) are rotatably connected to the support frame (4) through bearings. A second driven gear (11) that meshes with the second gear ring (22) is fixedly connected to the rotating insert (8). A first driven gear (9) located on both sides of the second driven gear (11) is sleeved on the rotating insert (8). A double ring connecting frame (10) located on the outside of one end of the three-jaw chuck (3) is provided at one end of the first driven gear (9). A first gear ring (7) that is connected to the three-jaw chuck (3) and meshes with the first driven gear (9) is provided on one side of the double ring connecting frame (10).

4. The automatic welding device based on roller processing according to claim 3, characterized in that, The diameters of the second gear ring (22) and the first gear ring (7), and the diameters of the second driven gear (11) and the first driven gear (9) are the same.

5. An automatic welding device based on roller processing according to claim 3, characterized in that, The first driven gear (9) and the first gear ring (7) are rotatably connected to the double ring connecting frame (10) through bearings. The inner side of the first driven gear (9) is provided with a through hole that matches the rotating insert rod (8).

6. The automatic welding device based on roller processing according to claim 1, characterized in that, The top of the tray (34) is at the same horizontal level as the top of the first connecting plate (27) at the lowest point inside the swivel (21).

7. An automatic welding device based on roller processing according to claim 1, characterized in that, The first transmission gear (33) and the second transmission gear (35) are each provided in twos, and the spur rack (32) is located between the two first transmission gears (33), and the movable rack (36) is located outside the two second transmission gears (35).

8. An automatic welding device based on roller processing according to claim 1, characterized in that, The lengths of the first diagonal brace (26) and the second diagonal brace (29) are equal.

9. An automatic welding method based on roller processing, characterized in that, An automatic welding apparatus based on roller processing as described in any one of claims 1-8 includes the following steps: S1: First, pass the roller to be processed through the rotating ring (21) so that the center section of the roller is located inside the positioning ring (20); S2: Rotate the second bidirectional lead screw (28) to make the inner ring (24) move along the second bidirectional lead screw (28) toward the rotating ring (21), so that the inner ring (24) squeezes one end of the first inclined support frame (26), so that the other end of the first inclined support frame (26) pushes the first connecting plate (27) toward the center of the rotating ring (21), so that the first connecting plate (27) can clamp and fix the roller; S3: The roller is supported in sections by the segmented support component, the connecting shaft is fixed by the three-jaw chuck (3), and then the horizontal movement of the three-jaw chuck (3) is used to make one end of the connecting shaft fit with one end of the roller. S4: The welding and fixing of the connecting shaft and the roller is achieved by the cooperation of the movable seat (5) and the welding gun (6). After the welding of one of the connecting shafts is completed, the welding gun (6) is moved by the movable seat (5) to realize the repositioning of the welding gun (6), so that the welding gun (6) can weld and fix the connecting shaft located at the other end of the roller.

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